Cooking apparatus.



PATENTED OCT. 23, 1906.

V. W. BLANGHARD. COOKING APPARATUS.

' APPLIOATIOH FILED uzmz, 1906.

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PATENTBD OCT. 23, 1906.

V. W. BLANCHARD.- COOKING APPARATUS.

APPLICATION FILED JAN. 22, 1906.

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VIIRGIL W. BLANGHARD, or NEW YORK; N. Y.

COOKING APPARATUS.

Specification of Letters Patent.

Patented Oct. 23, 1906.

Application filed January 22,1906. Serial No. 297.255.

To all whom it may concern.-

Be it known that I, Vmen. W. BLANCHARD, of New York, in the county ofNew York and State of New York, have invented certain new and usefulImprovements in Cooking Apparatus and I hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings, which form part of thisspecification.

This invention is an. improvement in apparatus for cooking with gaseousfuel and its object is to provide a gas-burning cookingrange of largecapacity in'which the cooking operations are principally performed bymeans of stored or accumulated heat in the cooking-chambers, such heatbeing preferably generated by means of a gas-burning apparatus.

The object of the present invention is to provide a series ofcooking-compartments within a large heat accumulating and storingchamber or casing, the several compartments being directly connectedwith the heat-generatin apparatus, so that cooking operations can Teperformed therein separately or simultaneously. I further provide meanswhereby the several compartments can be heated from one common heater,and, if de sired, the heat-gases may be supplied continuously to one ormore of the. compartments during the cooking operations therein,

or the supply of heating-gases may be out off or materially reduced inquantity and the cooking operations performed by the means of theaccumulated'heat stored up into the walls of the inclosin casing.

The invention wil be more fully understood from the followingdescription of the apparatus shown in the drawings which embodies theinvention, and the combination of parts for which protection is desiredin this application is set forth in the claims followin the description.

igure 1 is part longitudinal section and part elevation of the completeapparatus. ig. 2 is a plan view thereof with part of the cover removed,and Fig. 3 is a central vertical transverse section of the apparatus Insaid drawings, A designates a heat-generating apparatus the outlet whichconnects with a horizontal range, portion A. The upper part of thestoveand the range portion A thereof are inclosed within a largeeat-storing chamber or casing B, which is constructed, preferably, intwo opposite ver- E tical and longitudinal separable sections B whichare fitted at their lower ends around the upper portion of the stove andinclose the range portion A thereof, as indicated in Figs. 1 and 2 ofthe drawings.

The particular means by which the sections are fastened together aroundthe stove are not claimed herein and neither is the particularconstruction of the non-heat-conducting walls thereof. The heatstoringchamber or casing B might be permanently built around the range, asindicated in the drawings. The side walls of the chamber are preferablycomposed of an inner lining b, of metal, adjacent to which is a layer ofasbestos 6, outside of which is a layer of metal I), outside of which isa layer of non-heatconducting material 5 outside of which is a layer ofwood 6', surrounded by a layer of felt b and the whole inclosed by anouter layer or sheath of wood I). This construction renders the wallspractically impervious to heat and cold, although the inner metallicparts are adapted to store a large amount of heat, while loss of heat byextraneous radiation or convection is prevented, so that the outside ofthe casing will be practicall cold, while the inside may be at a verybig temperature.

The bottom of the casing may be constructed of an inner metal plate 2, anonheatconducting layer .2, and an exterior sheath 2 The bottom might beconstructed like the sides, if desired; but as the natural tendency ofheat is to rise in the chamber it is not necessary to have the. bottomas thick as the side walls. The upper end or roof of the chamber may beclosed by a suitable non-heat-conducting Wall and, as shown, is madethicker than the side walls, having an internal plate I) and top plate 6of wood,

and successive layers of non-heat-conducting material I)", by which lossof heat by conduction or radiation will be prevented. I preferably makethe top cover of the casing removable and in transverse sections; but

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in the'present case the cover may be either removable or permanentlysecured in pos1-' tion.

The interior of the heat-accumulating".

chamber is preferably divided into a series of compartments 1, 2, and 3,as shown, by transverse partitions G, which may be formed by metalplates having their side edges confined in guides 0, attached to theinner side walls of the chamber, and said with valves C be closed if itis desired to shut ofi direct communication between the compartments 1 23. Access can be had to these compartments throughopenings in thefront-sideiof the casing, which openings may be closed-by doors D, thatare preferably lined with nonheat-conducting layers similar to the sidewallsiand fit closely in the openings, so that they will serve to storeheat and prevent loss thereof when closed.

'The top plate of the stove and rangeis provided with openings 0/ a athrough which the heatedgases canbe supplied directly into the severalcompartments 1 2 3. These openings 0/ a a maybe closed by removablelates, if-desired, so as to direct the principal eat into any one or.more of the compartments when'the other compartments are not .beingused for cooking by direct heated gases supplied from the stove A.

In the upper part or cover of the chamber are openings .1 2 3 in whichmaybe fitted metallic collars E F G and which are closable by suitableplates, so that .the escape of the heat from the compartments can beprevented and properly regulated. In the collar E above compartment 1 Ipreferably lace a set of griddle-plates e, above which the mouth of thecollar E is closed by a plate e, having an opening in it closed by avalve e The plates e and 6 can be removed, and, if desired, a domesticboiler can be placed over the opening to be heated. The opening incollar I may be closed by a plate f, rovided with a mica or glass sightf ','by w 'ch the condition of articles in compartments 2 can-bevisiblyinspected,fromabovewithout opening the doors in the casing.

In therear wall of the central compartiment (see Fig. 3) is anupwardly-inclined opening .K, whose ends are closed 'by anes 10k. ,ofmica, so as-toprevent the loss 0? heat :by' conduction from .thecompartment and which will admit light into compartment2, so thecondition of any article of food .be' .cooked in said compartment can bereadily-determined, the upper plate f admitting light directly down into"the compartment. .If desired, similar visual inspection-openings may be.madein the walls of -compartments .1 .and 3.

Theopeninglaabove compartment 3 can be closed .b y.a ,p te g, which inthe example shown :fOI'mSza ,guide -'.bearing 'for the upper end of arod h, to the lower end of which is .attacheda stirrer. h, operating ina vessel H, ,placed-over the-outlet a from the range extension A incompartment 3. Obviously .the openings in the upper compartments.couldbe closed bysimilar devices, desired.

,1 have shown in compartment l a waterheater or boiler 3 above theoutlet 0. from ends of the, several the stove A. Water can be suppliedto the vessel Jzthroughia -pipe-J.,-'connected with a funnel J on theoutside of'the casing, and can be-withdrawn from the vessel J through avalve-pipe 1', connected with the lower end thereofiandextending outsideof theicasing. .The stove andrange form a support for the heatestoringchamber, as is indicated in the drawings, and the cooking operations canbe carried on in the compartments, as hereinafter explained.

I have indicated a gas-supplying pipe M adjacent to casing, havingbranches m m m entering the compartments 1 2 3 for the purpose ofsupplying a non-oxidizing gas thereinto. In practice after theheat-storing chamber is thoroughly heated and ready for operation thecompartments may be filled with carbonic-acid gas, so that the cookingoperations can take place in a non-oxidizing gaseous medium; but I donot herein claim the particular means or process of cooking with suchgas, as this forms the subject-matter of another application.

Operation: The gas and the heated products of combustion generated inthe stove A are admitted into the storage-chamber through the severaloutlets, the fire being maintained in the stove until the interior ofthe chamber and parts therein have become highly heated. 'This does notrequire-either because the heat is readily absorbed by the interiorportions rof the :walls of the casing and cannot escape to the exteriorthereof. In order to produce'circulation of the hot gases through thecompartments, one-or more o'f'the covers in the openings in the .roof ofthe compartments 12:3 may be partly opened, and, if desired, the severalvalves 0 may be opened to permit direct circulation of the hot asesthrough the several compartments. henthe storage-chamber has beensufficiently heated, the temperature of whichcanbe readily determinableby means of yrometers inserted through openings or tu es P in the cover,the stove may long time,

be shut down or entirely closed 0th The articles to *be cooked :can thenbe placed in the several compartments as desired and will be cooked ibyreason of the accumulated 'heat stored up in the-walls thereof,thereinto, but confined therein vby'the nonheat-conducting walls of thecasing. If desired, while'food is being cooked in one or morecompartments'bythe stored or accumulated heat, food may be cookedinianother com artmentas compartment 3, "for examp e-by means ofdirectheat applied thereto from the stove and admitted thereinto throughopening 03. The cover of suchcom partment can be slightly raised,'so asto cause a circulation of the heated gases therethrough. Similarly,in'likemanner any com a great expenditure of fuel in the stove nor awhich will be radiated 'interiorly partment l 2 3 can be heated bydirect gases, while other compartments are being used to cook by storedheat.

Of course the number of compartments within the apparatus can be variedto suit the particular use for which it is designed or the requirementsof the owner for whom it is built, and I do not restrict myself to theparticular form or construction of parts illustrated in the drawings.

Having thus described my invention, what I therefore claim as new, anddesire to secure by Letters Patent thereon, is

1. The combination of a gas-burnin stove having a range extension,provide with openings, with a heat-storing chamber inclosing the upperportion of the stove and range and divided into compartments one overeach opening in the stove, an outlet-opening in the upper end of eachcompartment, a removable closure for each outlet-opening, and removableclosures for the openings in the range whereby the heating-gases may bedirected to any compartment of the storingchamber.

2. The combination of a gas-stove having range extensions provided withaseries of openings in its top, and a heating-chamber inclosing theupper portion of the stove and the range extension, and verticalpartitions in said chamber dividing it into a series of compartmentswhich respectively communicate with the respective openings, an outletin the top of each compartment and a removable closure for each outlet.

3. The combination of a gas-stove having a series of openings in itstop, and a heatingchamber inclosing the upper portion of the stove andhaving a series of vertical partitions dividing its interior intocompartments which respectively communicate with the respectiveopenings, valved openings in the partitions between the severalcompartments, a cover or top closing each compartment and provided withan outlet, and a removable plate closing the outlet in the cover.

4:. The combination of a gas-stove having a series of openings in itstop, and removable closures for the openings, with a heat-storingchamber inclosing the upper portion of the stove, and having 'a seriesof vertical coinpartments which respectively communicate with therespective openings in the top of the range, valved openings in thepartitions between the several compartments, a removable cover or topclosing each compartment and provided with an opening into eachcompartment, and a removable plate closing each opening in the cover.

5. The combination of a gas-burnin stove, a flue extension communicatingwith the outlet thereof provided with openings, removable closures forsaid openings, a casing inclosing said flue extension and divided intocompartments above the extension by partitions, each compartment beingover one of the openings in the flue extension; a cover for saidcompartment, outlets in the cover communicating with the respectivecompartments, and removable closures for said outlets.

6. The combination of a heating-range having openings in its top,closures for said openings, a casing having non-heat-conducting wallsand inclosing the upper part of the range, transversely-arrangedpartitions in said casing above the range dividing itinto compartmentsone over each opening, an outlet in the top of each compartment, andremovable closures for said outlets.

7. The combination of a heating-stove having a range extension A, acasing above the stove inclosing the extension A and havingnon-heat-conducting walls, transverselyarranged partitions C in saidcasing dividing it into compartments, an outlet-opening in the top ofeach compartment, removable closures for said outlets, an opening in theside of each compartment, doors closing said side openings, and valvedopenings in the partitions C.

In testimony that I claim the foregoing as my own I aflix my signaturein presence of two witnesses.

JAMES R. MANSFIELD, L. E. WITHAM.

